Critical Evaluation of Dyes as Crystal Growth Inhibitors

Kelley, Michael P.; Chow, Jason K.; Kahr, Bart

doi:10.1080/10587259408037752

Cited by 8 publications

(5 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Manchester, a textile center, afforded Buckley access to thousands of commercial dyes. During the next 10 years he recorded the results of 16,000 crystallizations of salts with dyes that he exhaustively ranked according to their power to inhibit the growth rates of particular surfaces of various crystals …”

Section: Buckleymentioning

confidence: 99%

Dyeing Crystals

2001

Self Cite

View full text Add to dashboard Cite

Section: Buckleymentioning

confidence: 99%

Dyeing Crystals

2001

Self Cite

View full text Add to dashboard Cite

“…By the early 20th century, it was understood that dye inclusion was a process of adsorption. , However, it would be a few more decades before Buckley would begin his extensive systematic studies (some 16 000 experiments) examining the ability of dyes to include in and alter the growth habit of crystals. − Research on dye inclusion crystals was effectively halted for the next several decades, likely due to the redirected interest in and rapid advance of X-ray techniques for crystal structure determination. Kahr et al are widely recognized for reviving current interest in both the fundamental understanding and wide-ranging applications of dye inclusion crystals. ,− In particular, we direct readers to Kahr and Gurney’s 2001 insightful review on dye inclusion crystals …”

Section: Introductionmentioning

confidence: 99%

Urochrome Pigment in Uric Acid Crystals

et al. 2016

View full text Add to dashboard Cite

Renal stones are heterogeneous composites of numerous microscopic crystals (e.g., calcium oxalate, calcium phosphate, uric acid, etc.) and 2–3 wt % amorphous organic “matrix”. Uric acid kidney stones are often red–orange–brown in color, though uric acid crystals are colorless. The stone color originates from a variety of components in the matrix, some of which are a broad range of urinary pigments or urochrome. Herein, we report the first definitive structure of one of these pigments, urorosein, and its ability to form intracrystalline inclusions in single crystals of both anhydrous uric acid and uric acid dihydrate. The preferred orientation of the included urorosein molecules in the uric acid crystals was determined through polarized light microspectroscopy. On the basis of these results, it seems likely that other urochrome pigments can locate in both intercrystalline and intracrystalline spaces in urinary precipitates. This expands the conventional picture of where “matrix” resides in these composite materials.

show abstract

“…We identified aniline blue ( 1 ) as the compound most akin to extra China blue whose constitution Perucca qualified as probabilmente . Specifically, Perucca identified the active colored component as trifenil-triparaamido-di/trifenil-tolil-carbinolo-di/monosolfonato di Na o di(NH 4 ): C 37/38 H 28/29 N 3 (SO 3 ) 1/2 (Na 1/2 ) .…”

Section: Crystal Growth and Sample Preparationmentioning

confidence: 99%

“…Historically, commercial aniline blue has principally been a mixture of two compounds, acid blue 93 (CAS no. 28983-56-4) and acid blue 22 (CAS no.…”

Section: Crystal Growth and Sample Preparationmentioning

confidence: 99%

“…It should be noted that the name “aniline blue” is sometimes associated with a mixture and sometimes associated with the minor component of the mixture, acid blue 22. Thus, there is considerable confusion as to precisely what compound Perucca used (see note ) and precisely what compounds are at issue in spectroscopic and histochemical studies involving “aniline blue”…”

Section: Referencesmentioning

confidence: 99%

See 1 more Smart Citation

Circular Dichroism Tensor of a Triarylmethyl Propeller in Sodium Chlorate Crystals

et al. 2010

Self Cite

View full text Add to dashboard Cite

In 1919, Perucca reported anomalous optical rotatory dispersion from chiral NaClO(3) crystals that were colored by having been grown from a solution containing an equilibrium racemic mixture of a triarylmethane dye (Perucca, E. Nuovo Cimento 1919, 18, 112-154). Perucca's chiroptical observations are apparently consistent with a resolution of the propeller-shaped dye molecules by NaClO(3) crystals. This implies that Perucca achieved the first enantioselective adsorption of a racemic mixture on an inorganic crystal, providing evidence of the resolution of a triarylmethyl propeller compound lacking bulky ortho substituents. Following the earlier report, NaClO(3) crystals dyed with aniline blue are described herein. The rich linear optical properties of (001), (110), and (111) sections of these mixed crystals are described via their absorbance spectra in polarized light as well as images related to linear dichroism, linear birefringence, circular dichroism, and anomalous circular extinction. The linear dichroism fixes the transition electric dipole moments in the aromatic plane with respect to the growth faces of the NaClO(3) cubes. Likewise, circular dichroism measurements of four orientations of aniline blue in NaClO(3) fix a bisignate tensor with respect to the crystal growth faces. Electronic transition moments and circular dichroism tensors were computed ab initio for aniline blue. These calculations, in conjunction with the crystal-optical properties, establish a consistent mixed-crystal model. The nature of the circular extinction depends upon the crystallographic direction along which the crystals are examined. Along 100, the crystals evidence circular dichroism. Along 110, the crystals evidence mainly anomalous circular extinction. These two properties, while measured by the differential transmission of left and right circularly polarized light, are easily distinguished in their transformation properties with respect to reorientations of the sample plates. Circular dichroism is symmetric with respect to the wave vector, whereas anomalous circular extinction is antisymmetric. Analysis of Perucca's raw data reveals that he was observing a convolution of linear and circular optical properties. The relatively large circular dichroism should in principle establish the absolute configuration of the propeller-shaped molecules associated with d- or l-NaClO(3) crystals. However, this determination was not as straightforward as it appeared at the outset. In the solid state, unlike in solution, a strong chiroptical response is not in and of itself evidence of enantiomeric resolution. It is shown how it is possible to have a poor resolution-even an equal population of P and M propellers-within a given chiral NaClO(3) crystal and still have a large circular dichroism.

show abstract

Critical Evaluation of Dyes as Crystal Growth Inhibitors

Cited by 8 publications

References 8 publications

Dyeing Crystals

Dyeing Crystals

Urochrome Pigment in Uric Acid Crystals

Circular Dichroism Tensor of a Triarylmethyl Propeller in Sodium Chlorate Crystals

Contact Info

Product

Resources

About